Narrated Mu'adh bin Sad or Sad bin Mu'adh:

A slave girl belonging to Ka'b used to graze some sheep at Sl'a (mountain). Once one of her sheep was dying. She reached it (before it died) and slaughtered it with a stone. The Prophet was asked, and he said, "Eat it."

حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ نَافِعٍ، عَنْ رَجُلٍ، مِنَ الأَنْصَارِ عَنْ مُعَاذِ بْنِ سَعْدٍ ـ أَوْ سَعْدِ بْنِ مُعَاذٍ ـ أَخْبَرَهُ أَنَّ جَارِيَةً لِكَعْبِ بْنِ مَالِكٍ كَانَتْ تَرْعَى غَنَمًا بِسَلْعٍ، فَأُصِيبَتْ شَاةٌ مِنْهَا، فَأَدْرَكَتْهَا فَذَبَحَتْهَا بِحَجَرٍ، فَسُئِلَ النَّبِيُّ ﷺ فَقَالَ " كُلُوهَا ".